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Wednesday, April 11, 2007
Rivetted and epoxied seams
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2007
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April
(36)
- Day 1 filming at Roger Hills House
- 2007-04-24 Report
- Towers going up south of Medicine Lodge
- Successful probe deployment today!
- In Pratte, KS
- Caught a tornado in Protection, KS
- Garden City KS
- Epic Tornado day for Eastern Colorado!
- Eric's Video: April 21st, 2007
- 2007-04-21 Report
- Four Way, TX
- Conway, TX
- In Dumas, TX
- Heading south out of Garden City, KS
- Towers up by McCook, NE
- First cell of the day
- Saturday April 21st a must chase day!
- Probe structure almost complete
- Working today with Habitat For Humanity
- Severe potential on the CO plains Weds
- Probes primed and eye formed
- Inner stiffener rings
- Expendible wireless probes
- Rivetted and epoxied seams
- Cone probe metal skins
- Rough mockup topview
- Rough mockup of wireless probe
- Transmitter battery choice #2
- Transmitter battery possibility #1
- Colorado National Monument
- Transmitter/Receiver Packages
- Academy of Model Aeronautics
- Tornado Probes and Plane Project April 28th - May 6th
- Video transmitters and cameras
- Next chase Friday April 13th?
- 7 News Chaser Blog Preps
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April
(36)
2 comments:
i'm trying to figure out aerodynamically if it makes sense to put ventilation holes in the cone to equalize the pressure from the underside of the cone to the top (or even create a slight vacuum due to venturi effect over the holes). These won't do much good if they lift and flip (and of course there's nothing you can do about debris hitting them.
Joe Pohlen
"i'm trying to figure out aerodynamically if it makes sense to put ventilation holes in the cone to equalize the pressure from the underside of the cone to the top (or even create a slight vacuum due to venturi effect over the holes). These won't do much good if they lift and flip (and of course there's nothing you can do about debris hitting them."
You'd have to be careful about how and where you place the holes. While it would reduce surface friction, angular winds on the holes might cause air to curl up and stack up inside the cone - building up pressure inside and increasing the chance for the cone to flip over. The point of the cone shape is to increase the pressure differencial on the outside and push the cone down.
If I were to change some details on the probes I would taper the top and perhaps attach some kind of rubber skirt to create the best possible seal with the ground.
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